bbox: Set up Bounding Box decoration

In rgl: 3D Visualization Using OpenGL

Description

Set up the bounding box decoration.

Usage

rgl.bbox( 
	xat = NULL, xlab = NULL, xunit = 0, xlen = 5, 
	yat = NULL, ylab = NULL, yunit = 0, ylen = 5,
	zat = NULL, zlab = NULL, zunit = 0, zlen = 5,
	marklen = 15.0, marklen.rel = TRUE, expand = 1, 
	draw_front = FALSE, ...)
bbox3d(xat = NULL, yat = NULL, zat = NULL, 
	xunit = "pretty", yunit = "pretty", zunit = "pretty", 
	expand = 1.03,
	draw_front = FALSE, ...)  

Arguments

xat, yat, zat	vector specifying the tickmark positions
xlab, ylab, zlab	character vector specifying the tickmark labeling
xunit, yunit, zunit	value specifying the tick mark base for uniform tick mark layout
xlen, ylen, zlen	value specifying the number of tickmarks
marklen	value specifying the length of the tickmarks
marklen.rel	logical, if TRUE tick mark length is calculated using 1/marklen * axis length, otherwise tick mark length is marklen in coordinate space
expand	value specifying how much to expand the bounding box around the data
draw_front	draw the front faces of the bounding box
...	Material properties (or other rgl.bbox parameters in the case of bbox3d). See rgl.material for details.

Details

Four different types of tick mark layouts are possible. This description applies to the X axis; other axes are similar: If xat is not NULL, the ticks are set up at custom positions. If xunit is numeric but not zero, it defines the tick mark base. If it is "pretty" (the default in bbox3d), ticks are set at pretty locations. If xlen is not zero, it specifies the number of ticks (a suggestion if xunit is "pretty").

The first color specifies the bounding box, while the second one specifies the tick mark and font color.

bbox3d defaults to pretty locations for the axis labels and a slightly larger box, whereas rgl.bbox covers the exact range.

axes3d offers more flexibility in the specification of the axes, but they are static, unlike those drawn by rgl.bbox and bbox3d.

Value

This function is called for the side effect of setting the bounding box decoration. A shape ID is returned to allow pop3d to delete it.

See Also

rgl.material, axes3d

Examples

  rgl.open()
  rgl.points(rnorm(100), rnorm(100), rnorm(100))
  rgl.bbox(color = c("#333377", "white"), emission = "#333377", 
           specular = "#3333FF", shininess = 5, alpha = 0.8 )
  
  open3d()
  points3d(rnorm(100), rnorm(100), rnorm(100))
  bbox3d(color = c("#333377", "black"), emission = "#333377", 
         specular = "#3333FF", shininess = 5, alpha = 0.8)

Example output

Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl.init' failed, running with 'rgl.useNULL = TRUE'. 
null 
   2 

rgl documentation built on Feb. 1, 2021, 3:01 a.m.